<!--父级页面:控制除了登录页以外所有页面共有的
        头部 与 左侧菜单栏-->
<template>
<div style="display: flex">
  <div :style="{width:(isCollapse ? '64px' : '208px')}">
      <!-- 左侧菜单栏 -->
      <el-menu
          style="width: 100%;height: 100vh;"
          background-color="#3C82F5"
          text-color="#fff"
          active-text-color="#ff0"
          :collapse="isCollapse"
          unique-opened
          router
          :collapse-transition="false"
      >
        <!--  左侧菜单栏的头部条  -->
        <el-row style="padding-top: 10px">
         <el-col :span="2"></el-col>
         <el-col :span="7" style="padding-left: 7px">
           <el-avatar src="/imgs/admin/logo.png" style="width: 35px;height: 35px;"></el-avatar>
         </el-col>
         <el-col :span="isCollapse ? 0 : 13">
           <span style="color: #fff;font-weight: bold;position: relative;top: 8px;left: 2px">智慧车辆</span>
         </el-col>
        </el-row>
        <el-sub-menu index="1">
          <template #title>
            <el-icon style="font-size: 21px"><User/></el-icon>>
            <span>用户管理</span>
          </template>
          <el-menu-item index="/user">用户列表</el-menu-item>
        </el-sub-menu>
        <el-sub-menu index="2">
          <template #title>
            <el-icon style="font-size: 21px"><Van/></el-icon>>
            <span>车辆管理</span>
          </template>
          <el-menu-item index="/vehicle">车辆列表</el-menu-item>
        </el-sub-menu>
        <el-sub-menu index="3">
          <template #title>
            <el-icon style="font-size: 21px"><Location/></el-icon>>
            <span>围栏管理</span>
          </template>
          <el-menu-item index="/geofence">电子围栏</el-menu-item>
        </el-sub-menu>
        <el-sub-menu index="4">
          <template #title>
            <el-icon style="font-size: 21px"><Place/></el-icon>>
            <span>调度管理</span>
          </template>
          <el-menu-item index="/application">申请列表</el-menu-item>
          <el-menu-item index="/audit">调度审核</el-menu-item>
          <el-menu-item index="/distribute">用车分配</el-menu-item>
        </el-sub-menu>
        <el-sub-menu index="5">
          <template #title>
            <el-icon style="font-size: 21px"><MessageBox/></el-icon>>
            <span>字典管理</span>
          </template>
          <el-menu-item index="/dict">字典列表</el-menu-item>
        </el-sub-menu>
      </el-menu>
    </div>

    <!-- 右侧主体 -->
    <div :style="{width:(isCollapse ? 'calc(100% - 64px)' : 'calc(100% - 208px)')}">
      <!-- 右侧顶部条 -->
      <el-header style="background-color: #fff;height: 10vh;padding-top: 22px">
        <el-row :gutter="10">
          <el-col :span="18">
              <el-icon style="font-size: 20px" @click="changeCollapsed"><Expand/></el-icon>
          </el-col>
          <el-col :span="6" style="position: relative">
            <el-dropdown trigger="click" style="position: absolute;right: 20px">
              <span style="font-size: 19px;font-weight: bold;">
                {{user.username}}
                <el-icon class="el-icon--right">
                  <arrow-down />
                </el-icon>
              </span>
              <template #dropdown>
                <el-dropdown-menu>
                  <el-dropdown-item @click="logout">退出登录</el-dropdown-item>
                </el-dropdown-menu>
              </template>
            </el-dropdown>
          </el-col>
        </el-row>
        <!-- 面包屑导航 -->
        <el-breadcrumb separator="/" style="position: relative;top: 20px;">
          <el-breadcrumb-item>首页</el-breadcrumb-item>
          <el-breadcrumb-item v-for="item in breadcrumb">{{item}}</el-breadcrumb-item>
        </el-breadcrumb>
      </el-header>

      <!-- 右侧可变区域 -->
      <el-main style="height: 90vh;padding: 0;overflow-y: auto">
        <router-view/>
      </el-main>
    </div>
  </div>
</template>


<script setup>

import {onMounted, ref} from "vue";
import {useRoute, useRouter} from "vue-router";

// 控制菜单栏是否折叠
const isCollapse = ref(false);
const changeCollapsed = () => {
  isCollapse.value = !isCollapse.value;
}

// 获取当前登录的用户信息
const user = ref(getUser());

// 退出登录
const logout = ()=> {
  if (confirm("确定退出登录吗？")){
    localStorage.removeItem('user');
    window.location.href = "/login";
    user.value = '';
  }
}

// 保存当前展示的面包屑导航的值
const breadcrumb = ref([]);
let map = {
  '/user':['用户管理','用户列表'],
  '/vehicle':['车辆管理','车辆列表'],
  '/geofence':['围栏管理','电子围栏'],
  '/geofenceMap':['围栏管理','围栏绘制'],
  '/application':['调度管理','申请列表'],
  '/audit':['调度管理','调度审核'],
  '/distribute':['调度管理','用车分配'],
  '/dict':['字典管理','字典列表'],
  '/dictOption':['字典项管理','字典项列表']
};
onMounted(()=>{
  updateBreadcrumb(route);
})
const route = useRoute();
const updateBreadcrumb = (route)=>{
  const path = route.path;
  breadcrumb.value = map[path];
}
const router = useRouter();
router.beforeEach((to,from,next)=>{
  updateBreadcrumb(to);
  next();
})


</script>


